Cross-tooling and crandalling machine.



No. 650,809. Patented May 29, I900.

M. DENNIS. CROSS TUOLING AND CRAN'DALLING MACHINE.

(Application filed July 24, 1599.)

(No Model.) 5 Sheets-Sheet l.

WITNESSES: INVENTOR: aw z? i'wdw. Wmn$gam2-my ATTORN EYS TN: numus runs on. nnoro-umq, WASNINDTON. o. c.

Nb. 650,809 Patented May 29, 1900 m. DENNIS.

CROSS TOOLING AND CBANDALLING MACHINE.

(Application filed July 24, 1899.) (No Model.)

5 Sheets- 82mm 2.

WITNESSES: INVENTORQ aw '2 I (Q2 I ATTORNEYS No. 650,809. Patented May 29', I900- M. DENNIS.

CROSS TOOLINGFAND CRANDALLING MACHINE.

(Application filed July 24, 1899.]

6 Sheets-Sheet 3.

(No Model.)

INVENTOR ATTORNEYS m: Mamas puns co. PNOTO-LIT No. 650,809. Patented-Hay 29, I900;

mourns.

CROSS TOOLING AND 'OBANDALLING MACHINE.

(Application filed July 24, 1899.) (No Model.) 5 Sheets-Sheet 4.

WITNESSESi INVENTOR fi Wvymwmy flammw.

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INVENTOR:

ATTORNEYS 5 Sheets-Sheet 5 M. DENNIS. CROSS TUOLING AND CRAN DALLING MACHINE.

(Application-515d .m 24, 1599.)

(No Model.)

WITNESSES: I 4? A4 .Wg/Wmy 1m Nrrn gasses PATENT MONTGOMERY DENNIS, OF BELLEVILLE, NEW JERSEY, ASSIGNOR OF ONE- I-IALF TO THE GEORGE BROXVN '& COMPANY, OF NElV JERSEY.

CROSS-TOOLING AND CfiANfiALLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 650,809, dated. May 29, 1900.

Application filed July 24,1899. Serial No. 724,906. (No 111061613 citizen of the United States, residing at Belleville, in thecounty of Essex and State of New Jersey, have invented certain new and useful Improvements in Cross-Tooling and Orandalling Machines; and I-do herebydeclare the following to be a full, clear, and exact descrip= tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to reference marked thereon, which form a part of this specification.

This invention relates to certain improvements in that class of stone-working machines represented by the one shown in my prior patent, No. 595,094, dated December 7, 1897.

The objects of the invention areto give to the surface of the stone a peculiar finish somewhat resembling in effect to the eye the crandalling-marks heretofore performed by hand and to obtain other effects difficult, if not impossible, to imitate practically by the hand, and to secure other advantages and results, some of which may be referred to hereinafter in connection with the description of the working parts.

The invention consists in the improved stone-finishing or cross-tooling machine and in the arrangements and combinations of parts of the same, all substantially as will be hereinafter set forth, and finally embraced in the clauses of the claim.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in each of the several views, Figure 1 is a front elevation of the cross-tooling and crandalling machine embodying my improvements. Fig. 2 is a detail View, on an enlarged scale and partly in section, showing'means for transmitting power and movement to the tool-carrier. Fig. 3 is a sectional view at-line y, Fig. 4, of a ratchet-wheel and pawl; and Fig. 4. is a plan of the same. Fig. 5 is a section taken on line 11 Fig. 2. Fig. 6 is a perspective view of a certain link adapted to receive a double eccentric and transmit the motion thereof to the tool-carrier. Fig. 7 is a detail side elevation of the tool-carrier and its connections.

Fig.8 is a section of the same online :0. Fig. 9 is a detail plan showing the connection of a screw shaftwith the means for impartingshort longitudinal reciprocating movements thereto, the sections being taken on line 00', Fig. 10. Fig. 10 is a front View of the same, and Fig. 11 is a front View of a'lever to which the reciprocating screw-shaft is connected. Fig. 12 is a section through line 2 in Fig. 1.

In said drawings, a indicates the frame or bed of an ordinary stone-planing machine having vertical bearings or ways a on which certain tool-supporting devices may operate and having means a for raising and lowering said tool-supporting devices.

I) is a movable carriage or table adapted to support and carry the stone beneath the finishing-tool 1;, suitable means 0 c c c c of any ordinary construction being provided to op-- crate the said table to secure the desired re ciprocation of said table.

' Onthe frame a or on the vertical slideways a, at opposite sides thereof, is arranged a horizontally-disposed and vertically-movable slideway f, and on the said slideway is arranged ahorizontally-movable head f, operated by a hand-screw f Upon said vertically-movable horizontal slideway f, at the opposite ends thereof, are formed boxes or bearings 61 d, which are movable vertically with the said horizontal slideway and carry the horizontal shaft 61, so that it lies parallel with the vertically-movable horizontal slideway and movable with the same. The said vertically-movable horizontal slideway is adjusted or raised and lowered by means of the screws a before referred to. These last operate simultaneously, and as they are uniformly threaded the said horizontal slideway f is adjusted vertically While maintaining its proper horizontal relation to the stone-carriage b. On the said head are formed vertical slideways f for a tool-carrier g, forming a part of said head, said carrier having a Vertical reciprocating motion in said slideway, secured by means of a link h, arranged on cams or eccentrics e 6, so as to be movable reciprocally thereby as the said cams rapidly rotate with the shaft 01. At its end opposite the eccentrics e e the said link his connected to said tool-carrier g, and thus the rapid reciprocating movement of the link is transmitted to said carrier and thence to the tool o, as will be understood. The tool-carrier may be provided with means for changing the inclination of the tool and for fastening said tool on said carrier. To operate said cam-shaft d, I provide bevel-gearing 7t" Z, a shaft on, another set of bevel-gearing n o, and means for transmitting motion, such as short shaft 0', bevel-gears o o shaft 0 leading from the front of the machine to the back thereof, and another set of bevel-gearing o the last beingon a cl utch-sleeve olhaving suit able clutch-jaws 0 adapted to engage a cooperating clutch o fast upon the main driving-shaft c.

The clutch members o o are thrown from clutching relation when the machine is to be employed in planing the stone; but when the crandalling or crosstooling is to be effected the said members 0 o are clutched. The said power-transmitting means are of a positive character, whereby there will be no material lost motion at any point between the said main driving-shaft and the tool-carrier. In connection with said main driving-shaft o and with the means above referred to for transmitting power or motion to the shaft (1 and tool-carrier I have provided means for moving the table I) longitudinally upon its slideways or bcarin gs (t of the bed or frame, said means for operating the table being of any kind commonly employed in the stonefinishing art. The means preferred, however, being of a positive nature, whereby there will be no loss of motion between the said main driving-shaft and the table, and thus the table and the tool-carrier both receiving their power indirectly from the main driving-shaft by positive transmitting means,the said table I) and carrier have a regular correspondence of movement, so that the work of tooling the stone will be uniform, and particularly when cross-tooling is effected the series of tool-indentures may be brought into alinement in the mannerdeseribcd by me in the patent before referred to.

lVhile I desire to operate the table by any of the well-known table-operating devices common in the art, I prefer for purposes of the present case to employ, in connection with the said table and slideway, a screw-shaft c, as shown more clearly in Figs. 1 and l2,where the said tableb is shown to be provided on the under side with a threaded projection or nut 11, Fig. 1, in which the said screwshaft 0 works, the rotation of the said screwshaft causing the table to move back and forth on its slideways a in the ordinary manner. Said screwshaft 0 is arranged in suitable bearings or boxes 0 Fig. 12, formed on or secured to the bed-plate,and at the rear end is provided with a beveled gear-wheel c, which intermeshes with a beveled gear-wheel c on the main power-shaft o. The said shaft 0' is provided with the ordinary means for securing a quick return movement of the stone-table and also a slow movement when the stone is under going the tooling operation. To secure the slow movement of the table during the toolin g operation, I arrange 011 the driving-shaft c a sleeve 0 having the beveled gear-wheel c and pulley e the beveled gear-wheel being constantly in engagement with the larger beveled gear-wheel c of the screw-shaft. To secure a fast return movement, I have also arranged at the extremity of said shaft 0 a beveled gear-wheel c, which intermeshes with the bevel gear-wheel a on the powershaft 0, which last is driven by the pulley c. 0 indicates an idle pulley on which the driving-belt may be shifted. \Vhilc I prefer this arrangement of parts for transmitting power to the table, as before indicated, other means may be employed as circumstances may warrant.

The machine described in myformer patent is capable of producing cross -tooling alone. Vhen I mention crandalling in said patent, I mean the effect produced by a series of straight indentures or grooves in alinement one with another, so as to produce a continuous groove extending across the stone or any ornament or face thereof.

In using the word crandalling in the present case I refer to a marking operation producing an effect different in appearance from the effect produced by cross-tooling, the crandalling-marks being irregular and giving a granular appearance to the face of the stone.

By my present improvements the machine is made capable of not only producing the cross-tooling effect, but also the peculiar granular effect desired. To this end the toolcarrier g is not only. given the movements referred to in my former patentto wit, a horizontal sliding movement back and forth on the way f, whereby the tool is moved transversely to the direction of movement of the stone, and a vertical reciprocating movement whereby the said tool is caused to rapidly engage the stone to produce the chiseling, cutting, or indenting effect-but is given a third rapid movement horizontally sidewise or at right angles to the direction of movement of the stone. The tool '1), employed when such movementis given, consists of a collection or group of points, which points may be formed upon one or a series of toolpieces properly fastened together and held upon the carrier 1. The quick lateral rcciprocations of the vertically-reciprocating tool, taken in connection with the moving stone and the shape of the tool above referred to, produce the crandalling effect desired. To secure said quick lateral reciprocations of the tool, I have made the screwshaft f capable of longitudinal reciprocation in its bearings, so that said shaft may not only be rotated to change the path of the tool over the stone, but may be given a limited longitudinal reciprocating movement in its bearings. To the end of said screw-shaft f opposite that having the hand-wheel or crank f for turning said shaft I; couple said screwshaft f to a lever 19, (shown in Fig. 9,) the said lever being properly provided with a threaded bushing loosely arranged therein, so as to permit the desired movement of parts. Said lever 19 is fulcrumed atone end at 13' upon a bracket q and at the opposite end is pivotally connected to the arm 0" of an eccentric-strap r, in which an eccentric s operates to secure the rapid re'ciprocations of parts.

To enable the indentations or chisel-marks to be of greater or less length horizontally, I have provided two eccentrics 88, one adjustable in relation to the other, as indicated in Figs. 1,5,9, and 10,0ne of which is keyed to the shaft, so as to move therewith and produce the reciprocating action, and the second of which is adjustable on'the first and is bolted thereto by bolts 25, the inner eccentric being flanged and the flange i being provided with a series of holes t to receive said bolts and permit of adjustment in the strap. The eccentrics being fastened to the shaft, they rotate therewith and cause the eccentric-strap and its arm 0'' to move backward and forward and oscillate the lever on its fulcrum p. The movement of the lever 19 in turn causes the desired reciprocatinglongitudinal movement to the screw-shaft f and the tool-carrier and tool '0, connected therewith.

To secure a greater orless indentation or depth of the cut or indentations on the stone, I have provided the double cam or eccentric e e of the tool-carrier g, the outer of which is adjustable in relation to the inner cam or eccentric in the manner described in connection with the cams s s to effect the variation in the distance of stroke of the tools. In this case the inner eccentric e is keyed to the shaft (1, and the outer eccentric is-adjustably fastened to the inner eccentric by bolts 12, Fig. 7.

To take up the lostmotion due to wear, I construct the link 7L as shown in Fig. 6, where the bearing for the eccentric is split, as at 71,, the jaws 7t2 7213, which are perforated and the perforations threaded,being provided with screws h to hold the jaws togethoraud with a limiting-screw 7L4, adapted to prevent the jaws being clamped with too great pressure upon the periphery of the eccentric. With this construction I can take up the lost motion due to wear with exactness and yet prevent the link from so clutching the eccentric as to prevent an easy movement.

To prevent the tool from working when the stone is being rapidly moved to an initial position backward, and thus prevent an undue rapid movement of the said tool, which would be very apt to injure the same or the gear wheels transmitting power, I have arranged the bevel-wheel Z; by means of which power is transmitted from the gear-wheel to the shaft (1, fast upon a sleeve Z, having ahead with a single ratchet-tooth Z The said shaft 01- is provided with a pawl-carryingcollar a,

which may beikeyed to said shaft d or otherwise affiXed thereto, the said pawl-carrying collar to being provided with a pawl w and a spring to, by means of which the pawl is normally held into engagement with the ratchetwheel. By having the single tooth upon the ratchet-wheel the tool will always be brought in cross-tooling to the proper position to securethe desired alinement.

'While' I' have described the construction now preferred, I am aware that various modifications and changes of relation of parts may be made without departing from the scope or spirit of my invention, and therefore I do what ble and means for operating the same, a vertically-movable slideway and means for ad-v justin g the same upon the ways a, a, a head sliding horizontally upon said slideway and a screw-shaft for horizontally adjusting the same, a tool-carrier supported on said head and a tool,1neans for reciprocating said carrier vertically and means for reciprocating said screw-shaft longitudinally, substantially asset forth.

2. Theimproved cross'tooling and crandalling machine, comprising a frame having horizontal and vertical ways, a stone-carriage on said horizontal ways, means for operating the stone-carriage, a'horizontal slideway adjustable on said vertical slideway of the frame and means for raising and lowering said horizontal slideway, a horizontal head f, horizontally adjustable on said horizontal slideway and having vertical slideways, a toolcarrier arranged in the last said vertical slideways, and a tool, means for quickly reciproeating said tool-carrier vertically, a transverse horizontal screw-shaft supported at its ends upon the horizontal slideway and work ing in a correspondiugly-threaded sleeve of the head f, means for turning said shaft and means for reciprocating said shaft independent of its rotary movement, substantially a set forth.

3. The improved cross-tooling and crandall- I ing machine, comprising a frame having horizontal and vertical ways, a stone-carriage on said horizontal ways and means for operating said carriage, a transverse slideway adjustable vertically on said vertical ways, a toolcarrier horizontally movable on said slideway, across the path of the stone-carriage and having an interiorly-threaded sleeve, a threaded shaft working in said sleeve and having its ends unthreaded and adapted to slide longitudinally, suitable bearings for said shaft at the ends of the slideway, and means for giv= ing said shaft a reciprocating movement independent of its screw motion, substantially as set forth.

4. In a cross-tooling and crandalling machine, the combination with a vertically-adjustable horizontal slideway, of a tool-carrier supported on said slideivay, and having a threaded sleeve, a correspondingly-ti]readed shaft working in said sleeve to adjust the tool-carrier laterally and having unthreaded portions lying in bearingsin the frame of the slideway and being capable of a longitudinally-reciprocating movement in said bearings, a power-shaft,an eccentric on said shaft, and means for connecting said eccentric to the said threaded shaft and imparting reciprocating motion thereto substantially as set forth.

5. In a cross-tooling and crandalling machine, the combination with a vertically-adjustable horizontal slideway, of a tool-carrier sliding on said slideway and having an interiorly-tln'eaded sleeve, a correspondinglythreaded shaft working in said sleeve and turning in bearings at the ends of the slideway and being capable of longitudinal movement in said bearings. a power-shaft at right angles to said threaded shaft, an eccentric on said power-shaft, and a lever pivoted at one end and linked to said eccentric at the other, the end of the threaded shaft being secured to said lever at a point intermediate of its ends, substantially as set forth.

(3. In a cross-tooling and crandalling machine, the combination with the tool, tool-carrier and transverse horizontal shaft for laterally adjusting said tool-carrier, said shaft being capable of both rotary and longitudinal movement, of means for longitudinally reciprocating said shaft, and comprising a sleeve screwed on the end of said shaft, a lever 19, pivoted at one end on a stationary support and perforated to receive said sleeve and allow the same to rotate without moving 10ngitudinally, a powershaft and an eccentric thereon, said eccentric having an arm connected to the free end of said lever, substantially as set forth.

7. In a machine for cross-tooling stone, the combination with a tool-carrier, and a shaft carrying an eccentric and connections for reciprocating the tool-carrier vertically, of a collar fast on said shaft, a pawl pivoted on said collar, a sleeve loose on said shaft and having a head with a single pawl-tooth adapted to be engaged by said pawl, and means for rotating said sleeve, substantially as set forth.

8. In a cross-tooling and crandalling machine, the combination of a vertical shaft m, carrying an eccentric and connections for reciprocating the tool-carrier laterally and horizontally, a horizontal shaft carrying an eccentric and connections for reciprocating the toolcarrier vertically, a collar fast on said shaft, a pawl pivoted on said collar, a sleeve loose on said shaft and having a head with a single pawl-tooth adapted to be engaged by said pawl, cooperating bevel-gears fast on said sleeve and the Vertical shaft m, respectively, and means for driving said shaft m, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this id day of June, 1899.

MONTGOMERY DENNIS. YVitnesses:

CHARLES II. PELL, C. B. PITNEY. 

